<template>
  <div class="login_container">
    <div class="login_box">
      <!--      头像区域-->
      <div class="avater_box">
        <img alt="" src="../assets/logo.png">
      </div>
      <!--      登陆表单区-->
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
        <!--     账户-->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!--        密码-->
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" type="password" prefix-icon="iconfont icon-3702mima"></el-input>
        </el-form-item>

        <!--        按钮-->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登陆</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>

    </div>
  </div>
</template>

<script>
export default {
  // name: 'Login'
  data () {
    return {
      // 这是登陆表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 这是表单验证规则
      loginFormRules: {
        // 验证用户名是否合法
        username: [
          {
            required: true,
            message: '请输入用户名称',
            trigger: 'blur'
          },
          {
            min: 3,
            max: 10,
            message: '长度在3到10字符之间',
            trigger: 'blur'
          }],
        // 验证密码是否合法
        password: [{ required: true, message: '请输入登陆密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在6字符到16字符之间', trigger: 'blur' }]
      }
    }
  },
  methods: {
    // 重置按钮事件
    resetLoginForm () {
      this.$refs.loginFormRef.resetFields()
    },
    // 登陆函数
    login () {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return
        // 直接取到data重命名为 res
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.error('登陆失败')
        this.$message.success('登陆成功')
        /**
         * 1.获取token保存 到sessionStorage
         *  1.1项目除登陆以外api都需要 token验证
         *  1.2 只有打开此网站时生效
         * 2.路由跳转 /home
         */
        console.log(res)
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    }
  }
}
</script>

<!--scoped只在当前组件生效  less支持 less语法-->
<style lang="less" scoped>

.login_container {
  background-color: #2b4b6b;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: #ffffff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avater_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;

    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eeeeee;
    }
  }
}

.btns {
  display: flex;
  justify-content: flex-end;
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

</style>
